L6229 Datasheet, PDF (1/25 Pages) STMicroelectronics – DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR

L6229
DMOS DRIVER FOR
THREE-PHASE BRUSHLESS DC MOTOR
1 FEATURES
■ OPERATING SUPPLY VOLTAGE FROM 8 TO
52V
■ 2.8A OUTPUT PEAK CURRENT (1.4A DC)
■ R_DS(ON) 0.73Ω TYP. VALUE @ T_j = 25 °C
■ OPERATING FREQUENCY UP TO 100KHz
■ NON DISSIPATIVE OVERCURRENT
DETECTION AND PROTECTION
■ DIAGNOSTIC OUTPUT
■ CONSTANT t_OFF PWM CURRENT
CONTROLLER
■ SLOW DECAY SYNCHR. RECTIFICATION
■ 60° & 120° HALL EFFECT DECODING LOGIC
■ BRAKE FUNCTION
■ TACHO OUTPUT FOR SPEED LOOP
■ CROSS CONDUCTION PROTECTION
■ THERMAL SHUTDOWN
■ UNDERVOLTAGE LOCKOUT
■ INTEGRATED FAST FREEWEELING DIODES
2 DESCRIPTION
The L6229 is a DMOS Fully Integrated Three-Phase
Motor Driver with Overcurrent Protection.
Realized in MultiPower-BCD technology, the device
combines isolated DMOS Power Transistors with
CMOS and bipolar circuits on the same chip.
The device includes all the circuitry needed to drive a
three-phase BLDC motor including: a three-phase
DMOS Bridge, a constant off time PWM Current Con-
troller and the decoding logic for single ended hall
sensors that generates the required sequence for the
power stage.
Available in PowerDIP24 (20+2+2), PowerSO36 and
SO24 (20+2+2) packages, the L6229 features a non-
Figure 1. Package
PowerDIP24
(20+2+2)
PowerSO36
SO24
(20+2+2)
Table 1. Order Codes
Part Number
Package
L6229N
L6229PD
L6229PDTR
PowerDIP24
PowerSO36
PowerSO36 in Tape & Reel
L6229D
SO24
L6229DTR
SO24 in Tape & Reel
dissipative overcurrent protection on the high side
Power MOSFETs and thermal shutdown.
October 2004
Rev. 3
1/25